Broca de perforación DTH Descripción Threaded Button Bit Túneles y Galerías Thread R32 Diameter [mm] 45 Diameter [in] 1¾ Gauge >( 30° Buttons (center) [No.] [mm] 2 x 9 Buttons (gauge) [No.] [mm] 5 x 11 Flushing (center) [No.] 1 Flushing (gauge) [No.] 2 Product number [SuperDome] 04-132-045-0329 Product number [Ballistic] 04-132-045-0331 Weight [kg] 0,7